Title:
EMBEDDED MAGNET ROTOR AND ROTATING ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/187971
Kind Code:
A1
Abstract:
According to one embodiment, this embedded magnet rotor (100) has: a rotor shaft; a rotor core (120) in which a plurality of permanent magnet storage spaces (121) are formed; and plate-shaped permanent magnets (130). Each permanent magnet storage space (121) has a communication opening (128) which extends further radially outward than a range in which the permanent magnet (130) is held by a magnet-holding outer protrusion (123b), and which communicates with a gap space (15). The communication opening (128) is formed so as to be sandwiched between two tips (127a, 127b). In a cross section perpendicular to a rotational axis direction, the thickness of the two tips (127a, 127b) in the radial direction and the width of the communication opening (128) in the circumferential direction are formed to have a dimensional relationship such that a fragment produced by damage to the permanent magnet (130) does not protrude from the communication opening (128) and contact a stator.
Inventors:
MATSUBARA MASAKATSU (JP)
KANO MASARU (JP)
YAMAGISHI DAISUKE (JP)
SASAKI NAOYA (JP)
KANO MASARU (JP)
YAMAGISHI DAISUKE (JP)
SASAKI NAOYA (JP)
Application Number:
PCT/JP2022/015396
Publication Date:
October 05, 2023
Filing Date:
March 29, 2022
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP (JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H02K1/276
Foreign References:
| JP2015202027A | 2015-11-12 | |||
| JP2005130604A | 2005-05-19 | |||
| JP2014064422A | 2014-04-10 | |||
| JP2015195638A | 2015-11-05 | |||
| JP5447418B2 | 2014-03-19 |
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, P.C. (JP)
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